(19)

(11)

EP 1 815 535 A2

(12)

(88) Date of publication A3: 03.08.2006 (43) Date of publication: 08.08.2007 Bulletin 2007/32 (21) Application number: 05805752.2 (22) Date of filing: 14.11.2005

(51) International Patent Classification (IPC):  H01L 33/00(2006.01) (86) International application number: PCT/IB2005/053742 (87) International publication number: WO 2006/054228 (26.05.2006 Gazette 2006/21)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 18.11.2004 EP 04105892 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)

(72) Inventors: HOELEN, Christoph, G., A. NL-5656 AA Eindhoven (NL) VAN DEN ACKERVEKEN, Antonius, C., J., C. NL-5656 AA Eindhoven (NL) RUTJES, Cornelius, F., J. NL-5656 AA Eindhoven (NL) VAN OS, Koen NL-5656 AA Eindhoven (NL) DE SAMBER, Marc, A. NL-5656 AA Eindhoven (NL) TREURNIET, Theodoor, C. NL-5656 AA Eindhoven (NL) (74) Representative: Rolfes, Johannes Gerardus Albertus  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)